C# learning project: horse racingg

Hi all,

I am learning C#, I am working on Lab1 in the Head first C# book. The purpose of the lab is to create a horse racing simulator. The method below is in a guy class. I kept getting the error, NullReference Exception Unhandled, when I tried to use the GetDescription method from the Bet class. Bascially, I have a Guy class and a Bet class, and a method in the Guy class call a method in the Bet class, but that doesn't work. I tried to create an object, but that doesn't solve the problem. Can someone give me an idea? I am new to C# and object oriented

public void UpdateLabels() {
// Set my label to my bet's description, and the label on my
// radio button to show my cash ("Joe has 43 bucks")